package chai.ning.string;

class Base{
	public Base(String s) {
		System.out.println("B");
	}
}

public class Derived extends Base {
	public Derived (String s) {
		super(s);
		System.out.println("D");
	}
	public static void main(String[] args) {
		 new Derived("C");
	}
}
